G'day Kai,
yes mate we are, unless I went severely astray.
The image I keep seeing a snap of on Discovery channel.
It looks like a worm. It is usually a pic in false colour with the worm a menacing red or green colour, and the rock a bit different.
Search the archives of "The Meteorite List".
It is an e-mail list I subscribe to.
The appropriate folks blether about such things there.
I had no knowledge of C12 isotopic ratios in life being different before I read the thread over many e-mails.

Kevin.